已经开发了两种制备5-甲氧基羰基羟甲基尿苷 (mchm 5 U)的 ( S )- 和 ( R )- 非对映异构体的几乎等摩尔混合物的新方法。第一种方法涉及用 SeO 2对尿苷 ( 5 )的 5-丙二酸酯衍生物进行 α-羟基化,然后转化为 ( S )- 和 ( R )-5-羧甲基尿苷 (cm 5 U, 8 ),最后,转化为相应的甲酯。在第二种方法中,( S )-和( R )-mchm 5-尿苷是从5-甲酰尿苷衍生物( 9)通过水解在含5-氰醇的尿苷( 10b )与甲醇的酸催化反应中制备的亚胺酸盐( 11 )。在这两种方法中,mchm 5 U 的 ( S )- 和 ( R ) 非对映异构体均通过制备型 C18 RP HPLC 有效分离。
已经开发了两种制备5-甲氧基羰基羟甲基尿苷 (mchm 5 U)的 ( S )- 和 ( R )- 非对映异构体的几乎等摩尔混合物的新方法。第一种方法涉及用 SeO 2对尿苷 ( 5 )的 5-丙二酸酯衍生物进行 α-羟基化,然后转化为 ( S )- 和 ( R )-5-羧甲基尿苷 (cm 5 U, 8 ),最后,转化为相应的甲酯。在第二种方法中,( S )-和( R )-mchm 5-尿苷是从5-甲酰尿苷衍生物( 9)通过水解在含5-氰醇的尿苷( 10b )与甲醇的酸催化反应中制备的亚胺酸盐( 11 )。在这两种方法中,mchm 5 U 的 ( S )- 和 ( R ) 非对映异构体均通过制备型 C18 RP HPLC 有效分离。
[EN] COMPOUNDS, COMPOSITIONS AND METHODS FOR SYNTHESIS<br/>[FR] COMPOSÉS, COMPOSITIONS ET PROCÉDÉS DE SYNTHÈSE
申请人:WAVE LIFE SCIENCES LTD
公开号:WO2018237194A1
公开(公告)日:2018-12-27
The present disclosure, among other things, provides technologies for synthesis, including reagents and methods for stereoselective synthesis. In some embodiments, the present disclosure provides compounds useful as chiral auxiliaries. In some embodiments, the present disclosure provides reagents and methods for oligonucleotide synthesis. In some embodiments, the present disclosure provides reagents and methods for chirally controlled preparation of oligonucleotides. In some embodiments, technologies of the present disclosure are particularly useful for constructing challenging internucleotidic linkages, providing high yields and stereoselectivity.
[EN] BINDING-SITE MODIFIED LECTINS AND USES THEREOF<br/>[FR] LECTINES DE SITE DE LIAISON MODIFIÉES ET USAGE CORRESPONDANT
申请人:SMARTCELLS INC
公开号:WO2010088261A1
公开(公告)日:2010-08-05
In one aspect, the disclosure provides cross-linked materials that include multivalent lectins with at least two binding sites for glucose, wherein the lectins include at least one covalently linked affinity ligand which is capable of competing with glucose for binding with at least one of said binding sites; and conjugates that include two or more separate affinity ligands bound to a conjugate framework, wherein the two or more affinity ligands compete with glucose for binding with the lectins at said binding sites and wherein conjugates are cross-linked within the material as a result of non-covalent interactions between lectins and affinity ligands on different conjugates. These materials are designed to release amounts of conjugate in response to desired concentrations of glucose. Depending on the end application, in various embodiments, the conjugates may also include a drug and/or a detectable label.
[EN] NOVEL PHOSPHOROUS (V)-BASED REAGENTS, PROCESSES FOR THE PREPARATION THEREOF, AND THEIR USE IN MAKING STEREO-DEFINED ORGANOPHOSHOROUS (V) COMPOUNDS<br/>[FR] NOUVEAUX RÉACTIFS À BASE DE PHOSPHORE (V), LEURS PROCÉDÉS DE PRÉPARATION ET LEUR UTILISATION DANS LA FABRICATION DE COMPOSÉS ORGANOPHOSHOREUX (V) STÉRÉODÉFINIS
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2019200273A1
公开(公告)日:2019-10-17
The present invention relates to novel phosphorous (V) (P(V)) reagents, methods for preparing thereof, and methods for preparing organophosphorous (V) compounds by using the novel reagents.
[EN] COMPOSITIONS AND METHODS FOR DELIVERY OF THERAPEUTIC AGENTS<br/>[FR] COMPOSITIONS ET PROCÉDÉS PERMETTANT D'ADMINISTRER DES AGENTS THÉRAPEUTIQUES
申请人:MODERNATX INC
公开号:WO2017099823A1
公开(公告)日:2017-06-15
This disclosure provides improved lipid-based compositions, including lipid nanoparticle compositions, and methods of use thereof for delivering agents in vivo including nucleic acids and proteins. These compositions are not subject to accelerated blood clearance and they have an improved toxicity profile in vivo.
[EN] TECHNOLOGIES USEFUL FOR OLIGONUCLEOTIDE PREPARATION<br/>[FR] TECHNOLOGIES UTILES POUR LA PRÉPARATION D'OLIGONUCLÉOTIDES
申请人:WAVE LIFE SCIENCES LTD
公开号:WO2020191252A1
公开(公告)日:2020-09-24
Among other things, the present disclosure provides technologies for oligonucleotide preparation, particularly chirally controlled oligonucleotide preparation, which technologies provide greatly improved crude purity and yield, and significantly reduce manufacturing costs.